I am 41 my husband is 34 we are trying to have a baby I had a tubal reversal done 2 years ago, I am curently on a med call Aranesp I take a needle every two week's, I had my period Nov/21, just last week I noticed light pink blood but only when I wiped, could this be Implantation bleeding or something else, please let me know I did a preg test yesterday but neg, when should I try a preg test again?